Analog Modulations
R&S
®
SMA100B
102User Manual 1178.3834.02 ─ 05
4.4.6.2 Source > External Settings
Access:
► Select "Modulation" > "Modulation Sources > External".
The "External" settings section contains all parameters required to configure the
signal of an externally supplied LF signal.
Settings
Coupling (AC/DC)....................................................................................................... 102
Impedance.................................................................................................................. 102
Bandwidth................................................................................................................... 103
Show Connector..........................................................................................................103
Coupling (AC/DC)
Selects the coupling mode (AC or DC) for the external signal.
"AC"
Disconnects the DC voltage component and uses only the AC com-
ponent of the modulation signal.
"DC"
Uses the modulation signal with both components, AC and DC.
For active external exponential AM, sets the coupling of the corre-
sponding input automatically to DC.
Remote command:
[:SOURce<hw>]:INPut:MODext:COUPling<ch> on page 598
Impedance
Sets the impedance for the externally supplied signal.
Remote command:
[:SOURce<hw>]:INPut:MODext:IMPedance<ch> on page 599
Modulation Settings
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